diff --git a/contributors.md b/contributors.md
index 5ec8380..79a3374 100644
--- a/contributors.md
+++ b/contributors.md
@@ -12,6 +12,7 @@ Granville Matheson 📝 🐛 ✅
 Martin Norgaard 💻 💬 🤔 ⚠️ 👀  
 Cyril Pernet 💻 📖 💬 🎨 💡 📋 🤔 ⚠️  
 Chris Rorden 💻 🐛 📖  
+Maximilian Cosmo Sitter 💻
 Claus Svarer 💻 💡⚠️   
 Adam G Thomas  🔍 🤔  
 Robert Innis 💡⚠️💵   
diff --git a/pypet2bids/pypet2bids/ecat.py b/pypet2bids/pypet2bids/ecat.py
index a4f7988..11c8fb9 100644
--- a/pypet2bids/pypet2bids/ecat.py
+++ b/pypet2bids/pypet2bids/ecat.py
@@ -244,7 +244,7 @@ def make_nifti(self, output_path=None):
         self.telemetry_data["NiftiFiles"] = 1
         self.telemetry_data["NiftiFilesSize"] = pathlib.Path(output).stat().st_size
 
-        if "nii.gz" not in output:
+        if "nii.gz" not in pathlib.Path(output).name:
             output = helper_functions.compress(output)
 
         return output